Volume 74, Number 3, May 2006
|Page(s)||506 - 511|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||07 April 2006|
Charge ordering melting and evidence for a metastable antiferromagnetic phase in
Hefei High Magnetic Field Laboratory, University of Science and Technology of China Hefei 230026, PRC
Accepted: 9 March 2006
The magnetic properties and stability in () polycrystalline manganites have been studied. We find that the Ti-dopant causes the melting of the charge ordering state and the presence of the short-range antiferromagnetic phase. The electron-spin resonance spectra and hysteresis loops reveal that the antiferromagnetic coupling is weakened rather than strengthened upon temperature decreases. The short-range antiferromagnetic phase is metastable and transforms into the stable ferromagnetic state.
PACS: 75.47.Lx – Manganites / 64.60.My – Metastable phases / 75.50.Ee – Antiferromagnetics
© EDP Sciences, 2006
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